VP Technical Data 4301 VERSA-PAC® Inductors and Transformers (Surface Mount) Effective August 2017 How to pin-configure VERSA-PAC® Each VERSA-PAC can be configured in a variety of ways by simply connecting pins together on the Printed Circuit Board (PCB). As shown below, the connections on the PCB are equal to the pin configuration statement shown at the bottom of the schematic symbol. Connecting a number of windings in parallel will increase the current carrying capability, while connecting in series will multiply the inductance. Each VERSA-PAC part can be configured in at least 6 combinations for inductor use or configured in at least 15 turns ratios for transformer applications. The VERSA-PAC allows for at least 500 magnetic configurations. The PCM configurations can either be created by the designer or simply chosen from the existing PCM diagrams. The following inductor example shows 6 windings in series, which result in an inductance of 36 times the base inductance and 1 times the base current. INDUCTOR EXAMPLEFOR SIZES VP3, VP4 AND VP5 L = 36 x L TOTAL BASE Component View = 36 times the base Inductance from Data Table. 1 4 1 12 1 12 9 2 5 11 8 3 6 7 10 7 6 7 PIN CONFIGURATIONS (2,12)(3,11)(4,10)(5,9)(6,8) Each VERSA-PAC may be used in at least 15 transformer applications. More than 375 transformer combinations may be achieved using the available VERSA-PAC parts. TRANSFORMER EXAMPLEFOR SIZES VP3, VP4 AND VP51:5 1 4 1 12 L = 1 x L PRIMARY BASE 12 9 1 2 2 5 I = 1 x I I = 1 x I 11 8 PRI BASE SEC BASE 3 6 12 7 10 7 6 7 PIN CONFIGURATIONS (3,11)(4,10)(5,9)(6,8) The PCM configurations may be selected from the examples above or created by the designer. The printed circuit board layout in each example illustrates the connections to obtain the desired inductance or turns ratio. The examples may be used by the PCB designer to configure VERSA-PAC as desired. To assist the designer, VERSA-PAC phasing, coupling and thermal issues have been considered in each of the PCM configurations illustrated. Additionally, the inductance and current ratings, as a function of the respective base values are shown in each PCM example. It is important to carefully select the proper VERSA-PAC part in order to minimize the component size without exceeding the RMS current capability or saturating the core. The Product specification table indicates maximum ratings. www.eaton.com/electronics 7